SWD其实和JTAG类似,是一种调试串口. JTAG大致了解了一下.JTAG(Joint Test Action Group)主要4 lines:TMS(模式选择),TCK(时钟),TDI(数据输入),TDO(数据输出).都是串行总线.JTAG model中通过状态机的方式,对cmd进行解析后控制TMS和TDI的输出. SWD(Serial Wire Debug)主要2 lines: SWDIO(双向串行数据线),SWDCLK(串行时钟线,Master drive).协议:ARM CPU sta
IBDAP-CMSIS-DAP Armstart's CMSIS-DAP firmware implementation in gcc and makefile. http://www.armstart.com IBDAP is a fully CMSIS-DAP compatible debug adapter. It provides vendor independent debug interface between your PC over USB and target ARM devi
KL46 custom board SWD reset is never asserted Hi everybody, I'm trying to program a custom board based on the KL46. However the reset signal for the SWD port is stuck at logic LOW. My programmer is a P&E Multilink FX. I can successfully program my te
PSoC 5 supports programming through the serial wire debug (SWD) interface. There are two signals in SWD interface: data signal (SWDIO) and a clock for data signal (SWDCK). The host programmer always drives the clock line, whereas either the programme
Serial Wire Debug interface The Serial Wire Debug protocol operates with a synchronous serial interface. This uses a single bidirectional data signal, and a clock signal. This section gives an overview of the physical Serial Wire Debug interface. Lin
Dapper Miser In late 2013, I created a functional implementation of CMSIS-DAP that runs in a low cost ~$1 PIC16F1454 microcontroller. My interest was seeing it deployed as a CMSIS-DAP debugger *integrated* into a low-cost hobbyist/educational ARM dev
1 Debug Interface Overview 1.1 Serial Wire Debug Serial Wire Debug (SWD) is a two-wire protocol for accessing the ARM debug interface. It is part of the ARM Debug Interface Specification v5 and is an alternative to JTAG. The physical layer of SWD con
Introducing swddude I love the ARM Cortex-M series of microcontrollers. The sheer computational power they pack into a teensy, low-power package is almost embarrassing. But, many Cortex-M parts are small — 4x4 millimeters small — and don’t have the